Asking for more food on a plane is perfectly acceptable, provided you follow proper airline etiquette. The best way to do this is to wait until the initial meal service is completely finished for the entire cabin. Once the flight attendants are clearing trays, you can politely approach the galley or use your call button (though approaching the galley is usually seen as less intrusive) and ask, "Excuse me, if there are any extra meals left over, I would love a second portion." Airlines often carry a few extra meals to account for spills or dietary mistakes. If extra hot meals aren't available, most flight attendants will happily offer you extra snacks, bread rolls, or a second dessert. Being friendly and patient is key; if the crew is in the middle of a busy service or dealing with turbulence, wait for a quiet moment. Also, keep in mind that on many low-cost carriers in 2026, additional food must be purchased from the buy-on-board menu.